The Saturdays star Vanessa White fell into a deep depression and began drinking heavily after shooting to fame with the British band.
The singer has previously explained how her bandmates, Mollie King, Una Foden, Frankie Sandford and Rochelle Humes, helped her break an unhealthy cycle of non-stop partying after they achieved chart success in 2008.
However, White has now opened up about the true depths of her despair, admitting she would anaesthetise herself with booze most nights, leaving her unable to perform properly on stage.
She tells Britain's Fabulous magazine, "My life started to spin out of control in 2010 and it was a dreadful year. I'd be out every night. I went to G.A.Y. (a popular gay club night in London), mainly because I didn't want to be hassled by men and just wanted to drink.
"I drank vodka mainly but, to be honest, I drank anything. It massively affected the band and I felt lonely and depressed.
"I didn't know who I was underneath everything I was supposed to be. I'd arrive for work every morning hungover, then my voice started to go. I'd have to ask Una (Foden) to cover my solos. Then I'd go out drinking because I thought it made me feel better."
The 24 year old has credited bandmate Humes with offering her shelter at her home when her antics reached crisis point: "One night, I called Rochelle in a state. She told me to come to hers and I stayed with her for two weeks, not drinking, and eating properly. It made me realize I had to stop."